Ments



ADJUSTABLE BELT TIGHTENBB. POR FANS.4 110. 491,024. Patented Jang. 31, 1893.

@MMC/wwwa '25 Y lST Tes PATENT o OFFICE.

WILLIAM RABIOH, OF ST. LOUIS, MISSOURI, ASSIGNOR, BY MESNE ASSIGN- MENTS, OF ONE-HALF TO THE HERRMANN-RABIOH FAN AND MOTOR MANUFACTURING COMPANY, OF SAME PLACE.

ADJUSTABLE BELT-TIGHTENER FOR FANS.

SPECIFICATION forming partof Letters Patent No. 491,024, dated 'January 31, 1893,

Application tiled September 28,1892. Serial No. 447,122. (No model.)

To a/ZZ whom it may concern:

Be it known that I, WILLIAM RABICH, of

St. Louis, State of Missouri, have invented' certain new and useful Improvements in Adjustable Belt-Tighteners for Fans, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention relates to belt tightening hangers generally and particularly in connection with fans, and is composed of the novel arrangement and combination of parts more particularly set forth in the specification and covered by the claims.

In the drawings Figure 1 is a side elevation of my complete invention; Fig. 2 is a top plan View of the casting constituting the supporti; Fig. 3 is a vertical longitudinal section of certain portions of my device, and Fig. 4L is a bottom plan view of the support Viewed from the opposite side shown in Fig. 2.

The object of my invention is to construct a hanger that may be turned or adjusted independently of its su pport, the latter having a socket Within which rotates the shaft of the hanger, and the hanger is provided with a supporting spindle located to one side of said shaft, whereby an ordinary belt may be tightened or loosened at will.

The invention is more specially adapted for moving the slack from belts which is generally removed by cutting the belt or introducing idlers.

Referring to the drawings, 1 represents a supporting casting which may be ornamented in any desirable manner and is provided with two openings 2 of suitable size to admit a nut. Leading from said openings and in communication therewith are two elongated openings 3 which extend in opposite direction and whose sides constitute arcs of circles described from the center of the casting. Fixed to the wall or ceiling are two projecting bolts et the ends of which are adapted to receive the nuts 5 sufficient space being left between said nuts and ceiling to receive the thickness of the casting 1 as best shown in Fig. 3. In order to fasten the said casting to the ceiling the nuts are passed through openings 2 after which the casting is slightly turned bringing the narrow openings 3 in contact with the bolts 4, the said nuts holding the casting in its proper position as best shown in Fig. 4. To release the casting the same is turned in a reverse direction until the nuts 5 register with the openin gs 2 the nuts passing freely through them.

6 represents a socket which is formed in the center of the casting 1 and is provided with a decreased portion 7 around which a toothed wheel 8 is fixed by bolt 9, the object of which will be hereinafter described.

10 represents a bolt which is passed through the said wheel and through the decreased portion 7 of the socket 6 and is adapted to hold the hanger in its proper position in a manner hereinafter stated.

11 represents the hanger which supports a spindle 12 and 13 representsa shaft forming a part of the hangerand about which the adf justment is made, the shaft spindle 12 being located at a suitable distance to one side of the shaft 13. The socket 6 is adapted to receive loosely the shaft 13 allowing the same to be turned independently of the casting, and formed around the said shaft is an annular groove 14 which receives the end of the bolt 10 for holding the hanger to the casting, the said bolt being tightened after the hanger is adjusted to its proper position in relation to the belt if found desirable. To one side of the hanger 11 are ears 15 to which is movably attached a pawl 16 the engaging end of which is received by the spaces 17 formed between the teeth of the wheel 8, thus holding the hanger rigidly after the same has been adj usted. In order to hold the pawl 16 `in engagement with the tooth wheel 8 I employ a spring 1S the free end of which bears against the pawl and its opposite end is fixed to the hanger.

Formed in the lower end of the bracket 12 l constituting a part of the hanger is a socket 19 which is adapted to receive one end of the spindle 12 and is held within said socket by a set screw 20. About said spindle 12 revolves a sleeve 21 below the bracket of the hanger, and adjustably secured to thesaid sleeve is a belt pulley 22, a tightening bolt 23 being employed to -hold the same to the sleeve. The

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lower end of the said spindle is screwthreaded as shown at 24 and is adapted to receive a nut or cap 25 for holding the sleeve upon the spindle and also forming a bearing for the same.

2,6 represents an ordinary double fan the blades of which are attached to a castingv 27, the medium portion of which forms a collar 28 which is fixed to the sleeve 2l the lower edge also resting upon the cap 25 as best shown in Fig. 3. If found desirable the sleeve 21 may be dispensed with and the belt pulley 22 secured directly to said spindle 12 in which instance the spindle 12 would constitute a shaft, premising howevei` that the said spindle be secured loosely within the socket 19.

From the foregoing description it Will be readily understood in what manner the belt is tightened, and the general operation of the device is made clear. It will be understood that the belt passing around pulley 22 is tightened or loosened in relation to an adjacent pulley or a pulley over-which the same belt passes by moving or turning the hanger in either direction within the socket of the support moving the beltpulleyin acircle about the socket which supports the hanger. l/Vhen once adjusted it is held in position by the spring pawl 16 engaging with the tooth wheel S.

Having fully described my invention what I claim i-s, p

1. A belt tightening hanger comprising a shaft supporting the same, a spindle located to one side of said shaft, and a rotating sleeve loosely mounted on said spindle, substantially as set forth.

2. A belt tightening hanger comprising a casting adapted to be secured to the ceiling there being a socket formed in the casting, a bracket carrying a spindle, a shaft located to one side of said bracketand movably secured within said socket, and means for holding the said bracket in proper adjustment, substantially as set forth.

3. A belt tightening hanger comprising av sleeve the fan or fans are attached, a belt pulley adj ustabl'y secured to said sleeve, a shaft located to one side of the said bracket and having an annular groove formed around it, a casting removably secured to the Wall or ceiling and having a socket formed therein adapted to receive the said shaft, a toothed wheel fixed to the said casting,abolt passing through the said wheel into said socket and into said annular groove, and a pawl fixed to the bracket and engaging with the toothed wheel for holding the bracket in adjustment, substantially as set forth.

4. In a belt tightening hanger, a casting having openings 2 located opposite one another, narrow elongated openings 3 constituting arcs of circles in communication with said openings 2, and extending in opposite directions, and a socket formed in said casting for receiving a bracket, substantially as set forth.

5. A belt tightening hanger consisting ofa casting 1, having openings 2 formed in the same, narrow openings 3 communicating with openings 2, bolts 4 projecting from the wall or ceiling having nuts screwed thereon, a socket 6 having a decreased portion 7, a toothed wheel 8 fixed to said portion, a bracket 12, a shaft 13 located to one side of said bracket and having an annular groove 14 formed therein, a bolt 10 passing through said wheel, decreased portion 7, and into said annular groove, a pawl 16 movably secured to the bracket and engaging with said wheel, a spring 18 bearing against said pawl, a spindle 12 secured within the socket 19, a sleeve 21 carried by said spindle, a belt pulley adjustably secured on said sleeve, a casting 27 also secured to said sleeve, and a cap 25 screwed on the lower end of said spindle,"`substan tially as set forth.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM RABICH. Vitnesses: y

BRUNO B. I-IERRMANN, EMIL STAREK. 

